Question

Identifying Permutations and Combinations

Directions:Identify each situation below as describing a permutation, combination, or neither. Then evaluate, simplifying completely.

1.I need to pick four students to represent our class on student council. In how many ways can I do this from our class of seven students?

2.I need to pick three different students to serve as the class president, secretary, and treasurer. In how many ways can I do this from our class of seven students?3.I need to pick five students to go to five different meetings of the student council, one student per meeting. The same person can go to all, or not. In how many ways can I do this from our class of seven students?

4.I need to pick five different students to go to five different meetings of the student council, a different student for each meeting. In how many ways can I do this from our class of seven students?

5.I need to pick two students to go pick up pizzas for the class. In how many ways can I do this from our class of nine students?

Answer 1

Ans (1) Total number of students is 7